A particle moving along a straight line according to the law , where x is its position measured from a fixed point on the line and t is the time elapsed till it reaches position x after starting from the fixed point. Here A, B and C are positive constants.
(A) Its velocity at t=0 is A
(B) Its acceleration at t=0 is B
(C) Its velocity at t=0 is B
(D) Its acceleration at t=0 is C
If the velocity of a particle moving on x-axis is given by . At which time is the acceleration of particle zero?
Momentum of a body moving in a straight line is . Find the force acting on a body at t=2 sec
(A) 6 N
(B) 8 N
(C) 4 N
(D) 2 N
A particle moves along straight line such that at time t its position from a fixed point O on the line is . The velocity of the particle when t=2 is: